Use PDF Annotator's built-in Image Editor to manipulate images in various ways before or after inserting them into a PDF document.
In the Image Editor, click the Open button to open an image from a local file. Click the Save button to export an image to a file. Click the Camera button to capture an image from a camera. Use the Copy button to copy the current image to the clipboard, or the Paste button to load an image from the clipboard into the Image Editor.
Once you're done editing an image, click OK to apply your changes or Cancel to discard them.
With a double click onto an image already inserted into a document, you can load the image back into the Image Editor and modify it.
You can always undo any modification within the Image Editor using the Undo and Redo buttons below the image preview. Please note that once you close the Image Editor with the OK button, all changes will be permanent.
To crop the current image either press the Rectangular Selection button, or the Lasso Selection button. Now, in the image preview, select the region you want to crop. Adjust rectangular selections by pulling the small handles around the selection rectangle, or move the whole selection. You can select multiple regions by holding the SHIFT key pressed after the first selection. Now, to crop the image, click the Crop to selection button.
You can make parts of an image transparent by "cutting out" those parts. First, press the Rectangular Selection button, or the Lasso Selection button. Now, in the image preview, select the region you want to cut out. Adjust rectangular selections by pulling the small handles around the selection rectangle, or move the whole selection. You can select multiple regions by holding the SHIFT key pressed after the first selection. Now, to cut the selected region out (i.e. make it transparent), click the Make transparent button.
Alternatively, you can cut out parts of an image that are colored identically. Press the Remove Background tool button (with the eyedropper icon), and click into the region that you want to cut out. This will immediately make the whole region transparent, as long as it has a similar color. The grade of color similarity can be adjusted before using the tool by setting the Tolerance value.
Use the Rotate Left and Rotate Right buttons to rotate the whole image.
Use the Flip vertically and Flip horizontally buttons to flip the whole image.